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DDE

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Everything posted by DDE

  1. DDE
    It's dangerous for us to remain here. I brought company.
  2. DDE
    Nah, they wrote that right into your internal passport, and until 1975 they strictly enforced paternal ethnic lineage. However, that doesn't settle the flame war in the slightest. NKVD documents list him as a Russian. However, he was born in Ukraine by geography, and a purported Kiev polytech uni application where he self-identifies as Ukrainian... which may have been for pragmatic reasons, because by 1924 UkSSR probably had semi-official university quotas for non-Russians under Lazarus Kaganovich and the Soviet policy of propping up controllable forms of minority nationalism. That's on top of an effective ban on non-proletarians... and then, in late 1940s, Jews.
  3. DDE
    Hm... second stage is pretty tiny. Tankage ratio looks about right for a kerolox.
  4. DDE
    I’ve literally never seen any phrase like that in Russian sources. The least technical term Korolev reportedly used was “putting people atop a drum of poison”. There is also considerable confusion as to what “devil’s venom” was. Some sources point to the early hypergols using crap like WFNA or sulphiric acid, not АК-27И.
  5. DDE
    I suspect that human-free, autonomous decision-making for weapon use is going to be resolved by the time deep-space warfare becomes relevant. Perhaps the humans of tomorrow would prefer that the decision to go to war is made by machines - the desire to offload responsibility to a (seemingly) benevolent tyrant is nigh-universal.
  6. DDE
    Hold up!
  7. DDE
    Two stages; probably not a soli... oh, wait, we know that already. I have visions of people in green with stars on their shoulders. I've long expected some sort of a SCUD-sized in-theater orbital launcher. Two-thirds the length of an Electron, half the capacity. May be kerolox, then, but a Naval Air Station may have IRFNA support facilities.
  8. DDE
    Still hits the (necessary) man-machine interface, relatively easy to shield against, and just as deadly to humans, respectively.
  9. DDE
    Just don't try to emulate a Proton or Rockot.
  10. DDE
    They absolutely do, and at low flows, positive displacement pumps outmatch turbines. Funny you should ask. Briz-M has that donut drop tank some people here were asking for.
  11. DDE
    Take that, xkcd.
  12. DDE
    Nitric acid, red, fuming, inhibited with hydrofluoric acid. Actually, reportedly it would have quite a long operating life. Or you could just inject some hypergolic fuel into your oxidizer tank, like R-36M does. They call it Satan. Bit of a problem there; 1970s deep-space stages considered methalox or lighter hydrocarbons to be storeable.
  13. DDE
    You’re really rushing it. UDMH-NTO/IRFNA is just fine for now. Extra performance can be coaxed out using aluminium or beryllium slurries, pentaborane, peroxide, or chlroine pentafluoride (and yes, Energomash has experience with all of the above). Besides, what do you have against pressure feeds? Moon ascent motors are marginally in turbopump territory; it’s less about the Rutgerford and more about turbines being inefficient at such mass flows. In the long term, aluminium-oxygen ISRU is my favourite.
  14. DDE
    Gryazev and Shipunov would like a word. Or six.
  15. DDE
    https://en.wikipedia.org/wiki/MARAUDER
  16. DDE
    The performance would be degraded so horribly, you’d be better off legging it to the maintenance depot. It’s like trying to use a bayonet once out of ammo for your assault rifle.
  17. DDE
    Hypervelocity? Yes. Hypersonic? No. Need a railgun for hypersonic. Which in turn brings us US military looking for guided railgun slugs.
  18. DDE
    Both, TBH. The original quote requires some background knowledge to understand even in Russian.
  19. DDE
    Guys, I'm happy to inform you you're looking at quite a bit of fake news. To quote my mail to r/space moderators, FYI, the article reiterates [2019 for Luna 25 polar lander,] 2021 for Luna 26 orbiter and 2022 for Luna 27 driller. There's also the 1h53m actual movie: https://vk.com/video-98331381_456239217 (link will likely be blocked)
  20. DDE
    Yes. It was quite amusing to read the posts from back in the day, with people not realizing how big of a trap it was.
  21. DDE
    And that's where the discussion should have ended. The last generation of IR missiles does not in any way rely on detecting the aircraft's propulsion system.
  22. DDE
    It wouldn’t be terribly efficient, and I’m not sure how well photocells respond to heating, but it may be possible to design them as passive cooling fins. Not terribly efficient, though. Keep in mind that the movie also doesn’t feature a true stellar fusion but has to involve some McGuffin in the form of dedicated fusion fuel. Of course, the tiny sun working is also internally consistent - BECAUSE IT SOMEHOW HAS A GRAVITY WELL COMPARABLE TO EARTH’S.
  23. DDE
    Any idea when Salyut-7 clips are going to start showing up?
  24. DDE
    This thread had been consecrated by the Ministorum. However, since then, heretical activity has been noticed. Purging will commence immediately.
  25. DDE
    Considering her only stated weakness is naïveté and it hasn’t gotten her into an unsalvageably bad situation even once, that’s not bloody likely.
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